Thanks Don, Between your post and Collins a pretty clear picture is emerging regarding slow flight in aircraft.
The use of rudder and aileron during slow flight depends on a host of issues, some subtle and some not so subtle. I'm beginning to wonder just how important washout really is in this mix with respect to low wing aircraft. Some KR's use alot of washout and it was pointed out earlier that washout can play a big roll in how ailerons behave at high angles of attack, so I wonder if this might help explain some of its slow flight handling characteristics? Denny ... --- Donald Reid <donr...@peoplepc.com> wrote: > At 08:26 PM 7/13/2005, you wrote: > >Dennis and netters > >The reason that some planes can "lift" a wing in > slow flight while > >others can't has to do with a long "arm" or simply > the leverage that > >the rudder has due to the length of the tailboom. > > > Not entirely true. The more dihedral the plane has, > the more > pronounced the yaw/roll coupling (lift a wing with > rudder) will > be. High wing have more effective dihedral than low > wings due to the > location of the center of gravity, so a KR looses a > some of the > potential for lifting a wing with rudder. > > > Although some of the trainers allow for use of > the rudder alone to > > lift a wing during slow flights and stalls, this > is mainly done by > > CFI's in training to build control confidence in > the student so > > that the student gets used to small inputs, and > being smooth, not > > because the rudder is the preferred control > device. > > Also not entirely true. My father was a P47 pilot. > He has told me > that they were taught to always use rudder to pick > up a wing when > they were slow. In certain situations, the wing > will stall abruptly > toward the low wing when you try and lift it with > ailerons > alone. For example, you can read Delmar Benjamin's > book about his > experiences with the GeeBee R1 replica. In one of > his early flights, > it almost snap rolled on final approach when he > tried to raise the > wing with aileron. He said that after that event, > he used rudder to > lift the wing in slow flight. > > > > > Don Reid - donreid "at" peoplepc.com > Bumpass, Va > > Visit my web sites at: > > AeroFoil, a 2-D Airfoil Design And Analysis Computer > Program: > http://aerofoilengineering.com > > KR2XL construction: > http://aerofoilengineering.com/KR/KR2XL.htm > Aviation Surplus: > http://aerofoilengineering.com/PartsListing/Airparts.htm > EAA Chapter 231: http://eaa231.org > Ultralights: http://usua250.org > VA EAA State Fly-in: http://vaeaa.org > > > > _______________________________________ > Search the KRnet Archives at > http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to > krnet-le...@mylist.net > please see other KRnet info at > http://www.krnet.org/info.html > "I can train a monkey to wave an American flag. That does not make the monkey patriotic." Scott Ritter __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
